If using Sempress WordPress theme, then remember that the ‘Aside’ and ‘Status’ Post Formats do not show the title of the post in WordPress.
This is intended behaviour. This post, incidentally, was an ‘Aside’.
That was a public information broadcast. 🙂
For more info, see this issue: https://core.trac.wordpress.org/ticket/24011?cversion=0&cnum_hist=43